Very large SOAP response - Android- out of memory error

Question

I have an application where i need to download a large amount of data via a SOAP call to a webservice into the application when it is first run. The response is then sent to a function which converts the XML and stores the data in a db file.

The data is more than 16MB in size and i have a java.lang.OutOfMemoryError everytime.

Modifying the webservice to give out smaller amounts of data is not an option.

Is there a way to be able to download the large data? Something like an InputStream perhaps?

This is my code

public Protocol[] getProtocols() {

    String METHOD_NAME = "GetProtocols";
    String SOAP_ACTION = "urn:protocolpedia#GetProtocols";
    Log.d("service", "getProtocols");
    SoapObject response = invokeMethod(METHOD_NAME, SOAP_ACTION);
    return retrieveProtocolsFromSoap(response);
}

private SoapObject invokeMethod(String methodName, String soapAction) {
    Log.d(TAG, "invokeMethod");
    SoapObject request = GetSoapObject(methodName);
    SoapSerializationEnvelope envelope = getEnvelope(request);
    return makeCall(envelope, methodName, soapAction);

}

Can anyone suggest what should be done in this case?

Thanks and regards Mukul